Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Clin Path > Parasites4 > Flashcards

Parasites4 Flashcards

1
Q

Demodex spp.

A
  • “Follicular Mange Mite”

* Adult is 0.25 mm long, cigar-shaped, found in hair follicles and sebaceous glands

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Importance, Diagnosis,Control Sarcoptesscabiei

A
  • Importance- Severe dermatitis
  • Diagnosis- Deep skin scraping
  • Control- Apply miticide, clip hair and bathe
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Sarcoptesscabiei

A
  • “Mange Mite”

* Adult 0.3-0.5 mm, burrows tunnels into skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Importance, Diagnosis, Control of Demodex

A
  • Importance-Severe dermatitis
  • Diagnosis- Deep skin scraping
  • Control- Treat w/ topical or systemic miticide
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Trichodectescanis

A
  • “Dog biting louse”

* Adult 2-4 mm, egg 0.5-1 mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Importance, Diagnosis, Control Trichodectescanis

A
  • Importance- Causes irritation and dermatitis, rough hair coat, intermediate host for Dipylidium caninum
  • Diagnosis- Examine hair coat for adults, nymphs, eggs
  • Control- Apply topical insecticide
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Linognathussetosus and Importance, Diagnosis, Control

A
  • “Dog sucking louse”
  • Adult 2-3 mm, egg 0.5-1 mm
  • Importance- Irritation and dermatitis, rough hair coat, anemia
  • Diagnosis- Examine hair coat for adults, nymphs, or eggs
  • Control- Apply topical insecticide
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Rhipicephalussanguineus and Importance, Diagnosis, Control

A
  • “Brown dog tick”
  • Adult 1 cm
  • Importance- Irritation, anemia, tick paralysis
  • Diagnosis- Finding tick on skin/ hair coat
  • Control- Treat host w/ topical antiparasitic
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Lyme Disease

A
  • Bacterial infection caused by - Borrelia burgdorferi
  • Tick vector
  • Bacteria is maintained in wildlife reservoirs that cause no apparent clinical disease in infected animals
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Syndrome of Lyme Disease

A

o Humans: erythema migrans- red, circular papule with “target” appearance (may have more than one)
 Fatigue, fever, headache, muscle and joint pain
 Arthritis, CNS and cardiac problems may develop without treatment
o Wild animals - subclinical
o Domestic animals - fever, anorexia, swollen lymph nodes, lameness, fatigue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Incubation period, Mode of transmission, Diagnosis of Lyme disease

A
  • Incubation period:3-32 days for appearance of papule
  • Mode of transmission- Through bite of an infected Ixodes spp. Tick
  • Diagnosis- History, syndrome, serology, culture of blood or tissue biopsy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Treatment of Lyme Disease

A

Antibiotics
o Patients treated with antibiotics in the early stages of the infection usually recover rapidly and completely. A few patients, particularly those diagnosed with later stages of disease, may have persistent or recurrent symptoms.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Control and prevention of Lyme Disease

A

o Avoid tick bites
o Control ticks around your house
o Manage wildlife populations (deer, squirrel)
o Seek medical help after tick bites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Rocky Mountain Spotted Fever

A

• Tick transmitted disease caused by: Rickettsia rickettsii
• Ticks serve as vector and reservoir of infectionàTransovarial transmission
o Transtadial transmission
• Disease most prevalent in south Atlantic states and Midwest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Syndrome of Rocky Mountain Spotted Fever

A

o Human– fever, myalgia, headache, chills
 skin rash on extremities
 capillary damage, liver disease
o Wild animals– subclinical
o Domestic animals– fever, anorexia, swollen lymph nodes
 – dyspnea, abdominal pain, edema of face and extremities
 conjunctival bleeding and retina damage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Mode of transmission of Rocky Mountain Spotted Fever

A

o Through the bite of an infected tick
• Dermacentorvariabilis
• Dermacentorandersoni
o Contact of skin or mucous membranes w/ tick body fluids when removing it

17
Q

Control and prevention of Rocky Mountain Spotted Fever

A

o Wear protective clothing when entering tick habitat
o Use tick repellents
o Check yourself and your dog for ticks and remove them carefully
o Clear brush away from residential areas

18
Q

Incubation,Diagnosis, Treatment of Rocky Mountain Spotted Fever

A 
•	Incubation period is 3 to 14 days
•	Diagnosis
o	History of tick bite, rash, and fever
o	Serology
•	Treatment- Antibiotics
19
Q

Cuterebra spp

A
  • “Rabbit bot fly” “Rodent botfly”
  • Adult is a fly, larval stage sometimes infects domestic animals
  • Importance- Irritation, tissue damage
  • Diagnosis- Presence of subcutaneous lump w/ breathing hole for larva
  • Control- Extraction of larva
20
Q

Gastrophilus spp.

A
  • “Bot” “Bot fly”
  • Adult is a fly, larva is brown and 2 cm, eggs are yellow
  • Importance- Cause stomach ulcers, “worry factor”
  • Diagnosis- Eggs on hair of legs and face
  • Control- Deworm infected horses
21
Q

Siphona spp.

A
  • “Horn fly”
  • Adult fly is 4-5 mm, dark-colored
  • Importance- Loss of production due to irritation
  • Diagnosis- See adult fly feeding on cow
  • Control Apply topical insecticide to animal and premises
22
Q

Tabanus spp.

A
  • “Horse fly”
  • Adult is up to 3 cm
  • Importance- Painful biter, “worry factor”
  • Diagnosis- See adult fly bite animal
23
Q

Hypodermalineatum

A
  • “Cattle bot fly” “Cattle grub” “Warble fly”
  • Adult is 3cm
  • Importance- “worry factor”, tissue damage
  • Diagnosis- Cyst-like swelling w/ breathing hole (warble)
  • Control- Apply topical insecticide
24
Q

Blow Fly

A
  • “Sheep bottle fly” “Sheep blowfly”
  • Adult is a fly, larva is a maggot/grub 1.5 cm
  • Importance- Causes myiasis
  • Diagnosis- Larva in open wound
  • Control- Clean wound, apply insecticide
25
Q

Dermatophytosis

A

• Fungal infection affecting keratinized tissueà skin, hair, nails
• Causative fungi
o Microsporum spp.
o Trichophyton spp.
• Reservoirs of infection include animals, humans, and the soil

26
Q

Clinical signs of Microsporumcanis

A
  • round lesions of alopecia, scaling, crusting
  • face, ears, and extremities most often involved
  • some infected animals may not show a lesion
27
Q

most commonly involved in animal to human transmission of ringworm

A

Microsporumcanis

28
Q

Diagnosis of Microsporumcanis

A

o microscopic examination of skin scraping
o fungal culture
o Wood’s lamp examination, infected tissue fluoresces yellow-green color

29
Q

Three forms of dermatophites

A
  1. ringed lesions
  2. subclinical
  3. kerion- raised tumor like growth/lesion
30
Q

Treatment of Microsporumcanis

A
  • Spot treatment– clip and clean around lesion, apply topical antifungal
  • Whole body treatment– bathe w/ antifungal shampoo and/or administer oral antifungal medication
31
Q

Human symptoms of Microsporumcanis

A

o Spreading ring-shaped lesions on the head or body
o periphery is reddish w/ vesicle, pustule formation
o skin surface may be dry and scaly or moist and crusted
o healing begins at center of lesion

32
Q

Fungal culture

A

Sabauraud’s dextrose agar
Low pH to prevent a variety of organisms from growing in it. Promote the growth of fungus.
Starts off as amber. Indicator- changes to red. Look at growth

33
Q

Methods of diagnosising ringworm

A
  • Microscopic exam of skin scrape
  • Fungal culture
  • Wood’s lamp examination
34
Q

Human symptoms of dermatophytosis

A

o Spreading ring-shaped lesions on the head or body
o periphery is reddish w/ vesicle, pustule formation
o skin surface may be dry and scaly or moist and crusted
o healing begins at center of lesion

35
Q

Mode of transmission of dermatophytosis

A

Direct contact w/ infected skin or hair, or contaminated inanimate objects

36
Q

Control and prevention of dermatophytosis

A
  • Treat infected people to prevent spread of infection to others
  • Treat infected animals to prevent transmission
  • Clean and disinfect inanimate objects in contact w/ infected animals

Clin Path (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions